Satellite thermal deformation test relative pointing change measurement system and method

A measurement system and thermal deformation technology, applied in the field of measurement, can solve the problems of low precision of theodolite and cannot meet the requirements of measurement accuracy, and achieve the effects of improving measurement accuracy and efficiency, light weight, and easy access

Active Publication Date: 2020-07-03
SHANGHAI SATELLITE ENG INST
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Problems solved by technology

However, due to the low precision of the theodolite, it cannot meet the requirements of high-resolution satellite thermal deformation test arc-second level pointing measurement accuracy

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  • Satellite thermal deformation test relative pointing change measurement system and method

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[0041] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0042] In the description of this application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", The orientation or positional relationship indicated by "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the application and simplifying the description, rather than indicating or implying the referred device Or elements must hav...

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Abstract

The invention provides a satellite thermal deformation test relative pointing change measurement system and method. The satellite thermal deformation test relative pointing change measurement system comprises a satellite body, a phased array radar antenna, a star sensor, a star sensor prism, a photogrammetric camera, a theodolite, a photoelectric autocollimator, a reference ruler, a reference point and a data acquisition and processing system, wherein the photogrammetric camera can measure spatial positions of a reference point and a target point on an array surface of the phased array radar antenna, the theodolite can measure the spatial position of the reference point in a theodolite coordinate system and a vector of a normal of a mirror surface of the star sensor in the theodolite coordinate system, the photoelectric autocollimator can measure pointing change of the normal of the mirror surface of the star sensor prism, and the data acquisition and processing system can establish apointing change relationship between a phased array radar antenna array plane normal and a star sensor prism mirror plane normal according to the information fed back by the photogrammetric camera, the theodolite and the photoelectric autocollimator. The system is advantaged in that measurement precision and efficiency of the thermal deformation test are improved.

Description

technical field [0001] The invention relates to the field of measurement technology, in particular to a system and method for measuring relative pointing changes in satellite thermal deformation tests, in particular to a high-precision relative pointing change measuring system and method for satellite thermal deformation tests. Background technique [0002] Satellite thermal deformation test is an effective method to obtain the relative pointing change between the high-resolution satellite sensor and the payload due to thermal load. In the current relative pointing measurement system, a combination measurement system of theodolite and photogrammetry camera is used. Since theodolite The accuracy of the system is more than 10 arc seconds, which cannot meet the requirements of arc-second level pointing measurement accuracy for high-resolution satellite thermal deformation tests. [0003] The patent document with the publication number CN106815402A discloses a method for predict...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/40G01C1/04G01C11/00
CPCG01S7/4026G01C1/04G01C11/00G01S7/4034G01S7/403
Inventor 任友良彭海阔王志国林德贵张如变王开浚
Owner SHANGHAI SATELLITE ENG INST
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